Agreed about The Cure, that's one of the best love songs ever; It fitting deserves its title.

Other ones I can think of:
"The Only One" by The Black Keys (Kind of a sad/happy love song. I struggle to ever listen to it to this day because it was always reminds me of an ex girlfriend.)
"Cotton Crown" by Sonic Youth
"Drain You" by Nirvana
"47" by Sunny Day Real Estate
"Out Go The Lights" by Spoon